JP2007122007A5 - - Google Patents

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Publication number
JP2007122007A5
JP2007122007A5 JP2006163875A JP2006163875A JP2007122007A5 JP 2007122007 A5 JP2007122007 A5 JP 2007122007A5 JP 2006163875 A JP2006163875 A JP 2006163875A JP 2006163875 A JP2006163875 A JP 2006163875A JP 2007122007 A5 JP2007122007 A5 JP 2007122007A5
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JP
Japan
Prior art keywords
lens
imaging
object side
focal length
following conditional
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Application number
JP2006163875A
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Japanese (ja)
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JP2007122007A (en
JP4828317B2 (en
Filing date
Publication date
Application filed filed Critical
Priority claimed from JP2006163875A external-priority patent/JP4828317B2/en
Priority to JP2006163875A priority Critical patent/JP4828317B2/en
Priority to TW095135933A priority patent/TWI308965B/en
Priority to KR1020060094603A priority patent/KR100766389B1/en
Priority to EP06020408A priority patent/EP1795936B1/en
Priority to US11/528,477 priority patent/US7295386B2/en
Publication of JP2007122007A publication Critical patent/JP2007122007A/en
Priority to US11/932,081 priority patent/US7535658B2/en
Publication of JP2007122007A5 publication Critical patent/JP2007122007A5/ja
Priority to US12/413,090 priority patent/US7715119B2/en
Publication of JP4828317B2 publication Critical patent/JP4828317B2/en
Application granted granted Critical
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Claims (15)

物体側に凸面を向けた正のパワーを有する第1レンズと、
物体側に凹面を向けた負のパワーを有する第2レンズと、
正のパワーを有する第3レンズと、
近軸近傍において物体側に凸面を向けたメニスカス形状の第4レンズと
を物体側から順に備え、かつ、以下の条件式(1)〜(5)を全て満足するように構成されている
ことを特徴とする撮像レンズ。
0.7<f1/f<1.1 ……(1)
1.45<n1<1.6 ……(2)
ν1>60 ……(3)
0.8<|f2/f|<1.8 ……(4)
1.9<f3/f<20 ……(5)
但し、
f1:第1レンズの焦点距離
f:全体の焦点距離
n1:第1レンズのd線に対する屈折率
ν1:第1レンズのd線に対するアッベ数
f2:第2レンズの焦点距離
f3:第3レンズの焦点距離
A first lens having a positive power with a convex surface facing the object side;
A second lens having negative power with the concave surface facing the object side;
A third lens having positive power;
A fourth lens having a meniscus shape with a convex surface facing the object side in the vicinity of the paraxial axis, and in order from the object side, and satisfying all of the following conditional expressions (1) to (5): A characteristic imaging lens.
0.7 <f1 / f <1.1 (1)
1.45 <n1 <1.6 (2)
ν1> 60 (3)
0.8 <| f2 / f | <1.8 (4)
1.9 <f3 / f <20 (5)
However,
f1: Focal length of the first lens f: Overall focal length n1: Refractive index of the first lens with respect to the d-line ν1: Abbe number of the first lens with respect to the d-line f2: Focal length of the second lens f3: of the third lens Focal length
さらに以下の条件式(6)を満足するように構成されている
ことを特徴とする請求項1に記載の撮像レンズ。
bf/TL>0.2 ……(6)
但し、
bf:第4レンズの像側の面から撮像面まで(バックフォーカス)の距離(空気換算)
TL:第1レンズの物体側の面から撮像面までの距離(但し、バックフォーカスは空気換算)
The imaging lens according to claim 1, further configured to satisfy the following conditional expression (6):
bf / TL> 0.2 (6)
However,
bf: Distance from the image side surface of the fourth lens to the imaging surface (back focus) (air equivalent)
TL: Distance from the object side surface of the first lens to the imaging surface ( however, the back focus is converted to air)
さらに以下の条件式(7)を満足するように構成されている
ことを特徴とする請求項1または請求項2に記載の撮像レンズ。
TL/(2×Ih)<1.1 ……(7)
但し、
Ih:撮像面での最大像高
Furthermore, it is comprised so that the following conditional expressions (7) may be satisfied. The imaging lens of Claim 1 or Claim 2 characterized by the above-mentioned.
TL / (2 × Ih) <1.1 (7)
However,
Ih: Maximum image height on the imaging surface
前記第2レンズから第4レンズは、それぞれ少なくとも1つの非球面を含んでいる
ことを特徴とする請求項1から請求項3のいずれか1項に記載の撮像レンズ。
The imaging lens according to any one of claims 1 to 3, wherein each of the second lens to the fourth lens includes at least one aspherical surface.
前記第1レンズは、少なくとも1つの非球面を含んでいる
ことを特徴とする請求項1から請求項4のいずれか1項に記載の撮像レンズ。
The imaging lens according to any one of claims 1 to 4, wherein the first lens includes at least one aspherical surface.
前記第2レンズから第4レンズは、全て樹脂材料により構成されている
ことを特徴とする請求項1から請求項5のいずれか1項に記載の撮像レンズ。
The imaging lens according to any one of claims 1 to 5, wherein the second lens to the fourth lens are all made of a resin material.
前記第1レンズは、光学ガラスにより構成されている
ことを特徴とする請求項1から請求項6のいずれか1項に記載の撮像レンズ。
The imaging lens according to any one of claims 1 to 6, wherein the first lens is made of optical glass.
さらに、前記第1レンズにおける光軸上の物体側の面位置と、前記第1レンズにおける光軸上の像側の面位置との間に絞りが配置されている
ことを特徴とする請求項1から請求項7のいずれか1項に記載の撮像レンズ。
The stop is disposed between the object-side surface position on the optical axis of the first lens and the image-side surface position of the first lens on the optical axis. The imaging lens according to claim 1.
物体側に凸面を向けた正のパワーを有する第1レンズと、  A first lens having a positive power with a convex surface facing the object side;
物体側に凹面を向けた負のパワーを有する第2レンズと、  A second lens having negative power with the concave surface facing the object side;
正のパワーを有する第3レンズと、  A third lens having positive power;
近軸近傍において物体側に凸面を向けたメニスカス形状の第4レンズと  A meniscus fourth lens having a convex surface facing the object side in the vicinity of the paraxial axis;
を物体側から順に備え、  In order from the object side,
前記第1レンズと前記第2レンズとの間に空気間隔を有し、かつ以下の条件式(5)を満足するように構成されている  An air space is provided between the first lens and the second lens, and the following conditional expression (5) is satisfied.
ことを特徴とする撮像レンズ。  An imaging lens characterized by the above.
1.9<f3/f<20 ……(5)  1.9 <f3 / f <20 (5)
但し、  However,
f:全体の焦点距離  f: Overall focal length
f3:第3レンズの焦点距離  f3: focal length of the third lens
さらに、以下の条件式(1)を満足するように構成されている  Furthermore, it is configured to satisfy the following conditional expression (1):
ことを特徴とする請求項9に記載の撮像レンズ。  The imaging lens according to claim 9.
0.7<f1/f<1.1 ……(1)  0.7 <f1 / f <1.1 (1)
但し、  However,
f1:第1レンズの焦点距離  f1: Focal length of the first lens
さらに、以下の条件式(2),(3)を満足するように構成されている  Furthermore, the following conditional expressions (2) and (3) are satisfied.
ことを特徴とする請求項9または請求項10に記載の撮像レンズ。  The imaging lens according to claim 9 or 10, wherein:
1.45<n1<1.6 ……(2)  1.45 <n1 <1.6 (2)
ν1>60 ……(3)  ν1> 60 (3)
但し、  However,
n1:第1レンズのd線に対する屈折率  n1: Refractive index with respect to d-line of the first lens
ν1:第1レンズのd線に対するアッベ数  ν1: Abbe number for the d-line of the first lens
さらに、以下の条件式(4)を満足するように構成されている  Furthermore, it is configured to satisfy the following conditional expression (4):
ことを特徴とする請求項9から請求項11のいずれか1項に記載の撮像レンズ。  The imaging lens according to any one of claims 9 to 11, wherein:
0.8<|f2/f|<1.8 ……(4)  0.8 <| f2 / f | <1.8 (4)
但し、  However,
f2:第2レンズの焦点距離  f2: focal length of the second lens
物体側に凸面を向けた正のパワーを有する第1レンズと、  A first lens having a positive power with a convex surface facing the object side;
物体側に凹面を向けた負のパワーを有する第2レンズと、  A second lens having negative power with the concave surface facing the object side;
正のパワーを有する第3レンズと、  A third lens having positive power;
近軸近傍において物体側に凸面を向けたメニスカス形状の第4レンズと  A meniscus fourth lens having a convex surface facing the object side in the vicinity of the paraxial axis;
を物体側から順に備え、かつ以下の条件式(1),(5)を満足するように構成されている  Are arranged in order from the object side, and the following conditional expressions (1) and (5) are satisfied.
ことを特徴とする撮像レンズ。  An imaging lens characterized by the above.
0.7<f1/f<1.1 ……(1)  0.7 <f1 / f <1.1 (1)
1.9<f3/f<20 ……(5)  1.9 <f3 / f <20 (5)
但し、  However,
f:全体の焦点距離  f: Overall focal length
f1:第1レンズの焦点距離  f1: Focal length of the first lens
f3:第3レンズの焦点距離  f3: focal length of the third lens
さらに、以下の条件式(2),(3)を満足するように構成されている  Furthermore, the following conditional expressions (2) and (3) are satisfied.
ことを特徴とする請求項13に記載の撮像レンズ。  The imaging lens according to claim 13.
1.45<n1<1.6 ……(2)  1.45 <n1 <1.6 (2)
ν1>60 ……(3)  ν1> 60 (3)
但し、  However,
n1:第1レンズのd線に対する屈折率  n1: Refractive index with respect to d-line of the first lens
ν1:第1レンズのd線に対するアッベ数  ν1: Abbe number for the d-line of the first lens
さらに、以下の条件式(4)を満足するように構成されている  Furthermore, it is configured to satisfy the following conditional expression (4):
ことを特徴とする請求項13または請求項14に記載の撮像レンズ。  The imaging lens according to claim 13 or 14, wherein the imaging lens is characterized in that:
0.8<|f2/f|<1.8 ……(4)  0.8 <| f2 / f | <1.8 (4)
但し、  However,
f2:第2レンズの焦点距離  f2: focal length of the second lens
JP2006163875A 2005-09-29 2006-06-13 Imaging lens Expired - Fee Related JP4828317B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2006163875A JP4828317B2 (en) 2005-09-29 2006-06-13 Imaging lens
US11/528,477 US7295386B2 (en) 2005-09-29 2006-09-28 Imaging lens
KR1020060094603A KR100766389B1 (en) 2005-09-29 2006-09-28 Imaging lens
EP06020408A EP1795936B1 (en) 2005-09-29 2006-09-28 Compact imaging lens of the telephoto type with four single lenses
TW095135933A TWI308965B (en) 2005-09-29 2006-09-28 Image lens
US11/932,081 US7535658B2 (en) 2005-09-29 2007-10-31 Imaging lens
US12/413,090 US7715119B2 (en) 2005-09-29 2009-03-27 Imaging lens

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JP2005283947 2005-09-29
JP2005283947 2005-09-29
JP2006163875A JP4828317B2 (en) 2005-09-29 2006-06-13 Imaging lens

Related Child Applications (1)

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JP2011173149A Division JP2011221561A (en) 2005-09-29 2011-08-08 Imaging lens

Publications (3)

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JP2007122007A JP2007122007A (en) 2007-05-17
JP2007122007A5 true JP2007122007A5 (en) 2008-11-13
JP4828317B2 JP4828317B2 (en) 2011-11-30

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US (3) US7295386B2 (en)
EP (1) EP1795936B1 (en)
JP (1) JP4828317B2 (en)
KR (1) KR100766389B1 (en)
TW (1) TWI308965B (en)

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